2871: What can be the impact of excessive / inappropriate use of nitrogenous fertilizers in agriculture?
1. Proliferation of nitrogen-fixing microorganisms in soil can occur.
2. Increase in the acidity of soil can take place.
3. Leaching of nitrate to the ground-water can occur.
Select the correct answer using the code given below.
(a) 1 and 3 only
(b) 2 only
(c) 2 and 3 only
(d) 1, 2 and 3
2872: In track meets both 100 yards and 100 metres are used as distances. By how many metres is 100 metres longer than 100 yards ?
(a) 0.856 m
(b) 8.56 m
(c) 0.0856 m
(d) 1.0 m
2873: Which of the following pairs is/are correct?
(A) Main root : Storage
(B) Lateral root : Absorption
(C) Root hair : Conduction
(a) Only A
(b) A and C
(c) All are correct
(d) None of the above
2874: During the Indian freedom struggle, the Khudai Khidmatgars, also known as Red Shirts, called for
(a) the Union of Pashtun tribal areas in north-west with the Afghanistan
(b) the adoption of terrorist tactics and methods for terrorising and finally ousting the colonial rulers
(c) the adoption of communist revolutionary ideology for political and social reform
(d) the Pathan regional nationalist unity and a struggle against colonialism
2875: High temperature and low pressure over the Indian Sub-Continent during the summer season, draws air from the Indian Ocean leading to the in-blowing of the
(a) Southeast monsoon
(b) Southwest monsoon
(c) Trade winds
(d) Westerlies